(中南工业大学粉末冶金国家重点实验室，长沙 410083)
摘 要: 研究了高能球磨制得的W-Ni-Fe预合金粉末的特性及粉末压坯在固相烧结时的物理力学性能。结果表明，高能球磨可以制得均匀的预合金粉，在1400～1440℃固相烧结可以近全致密和得到非常细(2～5μm)的多角形W晶粒，合金的抗拉强度可达900 MPa以上，延伸率为3 %左右。
关键字: 高比重合金 固相烧结 高能球磨
（State Key Laboratory for Powder Metallurgy,Central South University of Technology, Changsha 410083, P. R. China）
Abstract:The characteristics of milled W-Ni-Fe powders and the physical and mechanical properties of solid state sintered compact were studied. The results showed that, milling can produce homogenous pre-alloyed powders, after solid-state sintering at 1 400~1440℃, full density and very fine polygonal tungsten grains (2～5 μm) are achieved, and tensile strength can be 900 MPa over, elongation can reach 3%.
Key words: tungsten heavy alloy solid-state sintering high energy ball milling
